cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A275857 a(n) = floor(c*s*a(n-1)) + floor(d*r*a(n-2)), where r = (1+sqrt(5))/2, s = r/(r-1), c = 1, d = 1, a(0) = 1, a(1) = 2.

Table of values

n a(n)
0 1
1 2
2 6
3 18
4 56
5 175
6 548
7 1717
8 5381
9 16865
10 52859
11 165674
12 519267
13 1627524
14 5101104
15 15988252
16 50111546
17 157063265
18 492279150
19 1542937247
20 4835986551
21 15157302067
22 47507122597
23 148900291588
24 466694163381
25 1462746914806
26 4584648158602
27 14369538930774

List of values

[1, 2, 6, 18, 56, 175, 548, 1717, 5381, 16865, 52859, 165674, 519267, 1627524, 5101104, 15988252, 50111546, 157063265, 492279150, 1542937247, 4835986551, 15157302067, 47507122597, 148900291588, 466694163381, 1462746914806, 4584648158602, 14369538930774]